77033331 has 6 divisors (see below), whose sum is σ = 111270380. Its totient is φ = 51355548.

The previous prime is 77033293. The next prime is 77033351. The reversal of 77033331 is 13333077.

It is a de Polignac number, because none of the positive numbers 2^k-77033331 is a prime.

It is a super-2 number, since 2×77033331² = 11868268169911122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77033295 and 77033304.

It is not an unprimeable number, because it can be changed into a prime (77033351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4279621 + ... + 4279638.

Almost surely, 2^77033331 is an apocalyptic number.

77033331 is a deficient number, since it is larger than the sum of its proper divisors (34237049).

77033331 is a wasteful number, since it uses less digits than its factorization.

77033331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559265 (or 8559262 counting only the distinct ones).

The product of its (nonzero) digits is 3969, while the sum is 27.

The square root of 77033331 is about 8776.8633918958. The cubic root of 77033331 is about 425.4934632705.

The spelling of 77033331 in words is "seventy-seven million, thirty-three thousand, three hundred thirty-one".